Process for obtaining D(-)-and L(+)-.alpha.-azidophenylacetic acid

US3941814A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Gunter Bison · Troisdorf, DE
• Hans Schubel
• Gerhard Schmeling · Münstermaifeld, DE

Key dates

• Filing date: Jul 29, 1974
• Grant date: Mar 2, 1976
• Expiry date: Jul 29, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07B57/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

L(+)- or D(-)-.alpha.-azidophenylacetic acid is produced by a process which involves the steps of reacting a water-soluble salt of DL-.alpha.-azidophenylacetic acid with a water-soluble salt of an optically active .alpha.-phenylethylamine in an aqueous medium, effecting crystallization of the resulting reaction product, that is, the diastereomeric salt, and splitting of the thus-obtained salt.